RU19246U1 - HEARING AID - Google Patents

Abstract

1. A hearing aid comprising a housing, a battery, a microphone, an amplifier, a telephone, an acoustic cavity into which said telephone emits sound, flexible sound guides connecting said acoustic cavity to the ears, and ear plugs mounted at the ends of said sound guides, characterized in that at least one of the sound guides has a device containing acoustic impedance. 2. A hearing aid according to claim 1, characterized in that the device containing acoustic resistance is made as a separate assembly unit removable. A hearing aid according to claims 1 and 2, characterized in that the device containing acoustic impedance is installed in the gap of the sound guide. 4. A hearing aid according to claims 1 and 2, characterized in that the device containing acoustic impedance is installed in the auricle.

Description

HEARING AID

This utility model relates to the field of electro-acoustic devices (CL H 04 R 25/00), in particular, to hearing aids (H 04 R 25/00), including hearing aids with sound supply to both ears of a patient through acoustic sound guides.

Another area of application is electro-acoustic devices designed for individual listening with two ears of acoustic information through individual sound guides (H 04 R; A 61 V 7 / ...).

Several analogs are known - acoustic devices equipped with sound guides for individual listening to acoustic information: medical stethoscopes; "Stetoklip (Stetoklip) of the Danish company" Danavox (exhibit of the exhibition "Communication-65, Moscow, 1965); TKS-1 aircraft seat phone designed by the Tula Design Bureau “Octave”, equipped with a two-voice sound guide; The sound guide of the USA company “Audio in Motion, for which the patent No. 4 347 911, cl. 181-131 NKI of the USA, from 07.09.82.

The closest analogue (prototype) of this utility model is the sound guide described in US patent No. 4 347 911 of the company “Audio in Motion. The disadvantage of this prototype and other analogues is that the sound emitted by the source (telephone) installed in the hearing aid is supplied to both ears of the patient with hearing loss equal in sound pressure level and in frequency response. However, the patient may have hearing loss in the ears unequal both in general sensitivity and in the frequency range. The use of analogue sound guides, including the prototype, does not allow taking these individual characteristics of the patient into account. Therefore the purpose of this useful

IPC N 04 R 25/00

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The model is a device of sound guides of the hearing aid, allowing to take into account these individual characteristics of the patient.

The essence of the utility model is that a hearing aid, for example, a behind-the-ear type, contains a housing in which microphones are installed, an amplifier, a battery, for example, an electric battery, a sound source telephone, an acoustic cavity into which the telephone emits sound, and two flexible sound ducts connecting the acoustic cavity with the ears and ending with ear plugs. This hearing aid is distinguished by the fact that, at least in one of the sound guides, a device is installed that contains acoustic impedance (impedance). This device is made in the form of a separate assembly unit, installed either in the gap of the sound guide or in the ear insert. The acoustic impedance parameters of this device are determined by audiometric examination of the patient.

The list of figures of drawings explaining the essence of the utility model.

FIG. 1. A hearing aid in one sound guide of which a device containing acoustic impedance is installed.

FIG. 2. A fragment of the sound guide of the hearing aid, in the ear insert of which a device containing acoustic impedance is installed.

FIG. 3. A device containing acoustic impedance installed in the gap of the sound guide.

FIG. 4. A device containing acoustic impedance installed in the ear plug.

Proposed in accordance with a utility model, a hearing aid, for example, a behind-the-ear type (Fig. 1.) comprises a housing 1 in which a microphone (2.), an amplifier (3.), a sound emitting telephone (4), a battery ( 5), for example, an electric battery. The acoustic output (6) of the telephone (4) is connected to the acoustic cavity (7). Flexible sound guides (8) and (9) are connected to the cavity (7) with one end thereof. At the second end of the sound guides (8) and (9), ear plugs (10) and (11) are installed, which are inserted into the patient's ears. A device containing acoustic impedance (12) is installed in the gap (13) of the sound guide (8) (Fig. 1.) or in the ear insert (10) (Fig. 2).

A device containing acoustic impedance (12) installed in the gap (13) of the sound guide (8) (Fig. 3.) is made in the form of a tube (14) filled with material having the necessary acoustic impedance (15). A device containing acoustic impedance installed in the ear insert (10) is made in the form of a tampon (16) (Fig. 4.) from a material having the necessary acoustic impedance.

The proposed utility model works as follows: the external sound is perceived by the microphone (2), which is converted into the corresponding electrical signal, which is amplified by an amplifier (3) and fed to the telephone input (4). The telephone (4) converts this electrical signal into an amplified sound signal, which through the acoustic output (6) of the telephone (4) enters the acoustic cavity (7), and then into the sound guides (8) and (9). From the sound guide (9), the sound signal through the ear insert (11) goes directly to the patient’s ear without processing. The sound signal received in the sound guide (8), enters the device containing acoustic impedance and its level and frequency response are changed in accordance with the requirements of the audiological examination of the patient. 3

Claims (4)

1. A hearing aid comprising a housing, a battery, a microphone, an amplifier, a telephone, an acoustic cavity into which said telephone emits sound, flexible sound guides connecting said acoustic cavity to the ears, and ear plugs mounted at the ends of said sound guides, characterized in that at least one of the sound guides has a device containing acoustic impedance.  2. A hearing aid according to claim 1, characterized in that the device containing acoustic impedance is made as a separate assembly unit removable.  3. A hearing aid according to claims 1 and 2, characterized in that the device containing acoustic impedance is installed in the gap of the sound guide. 4. A hearing aid according to claims 1 and 2, characterized in that the device containing acoustic impedance is installed in the auricle.